Question

-6(10-4f)=-3(-12-8f)

Answer 1

What to find?
f or what?

Answer 2

First combine like terms, so distribute -6 into 10 and -4f. Which gives you -60+24f=36+24f. Then get the f variables on one side so they would cancel each other out. This leaves you with -60=36. So the statement is false.